Mitsubishi Electric CITY MULTI PUMY-SP80 Installation Manual page 16

6. Electrical work
6.3. Wiring transmission cables
1 Types of control cables
1. Wiring transmission cables
Types of transmission cables
Cable diameter
Maximum wiring length
2. M-NET Remote control cables
Types of remote control cables
Cable diameter
Remarks
* Connected with simple remote controller.
3. MA Remote control cable
Type of remote control cable
Cable diameter
Remarks
* Connected with simple remote controller.
Example of a group operation system with multiple outdoor units (Shielding wires and address setting are necessary.)
<Examples of Transmission Cable Wiring>
I Refer to Fig. 6-6 from Fig. 6-2.
<Wiring Method and Address Settings: without Branch box system>
a. Always use shielded wire when making connections between the outdoor unit (OC) and the indoor unit (M-IC).
b. Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block (TB3) of each outdoor unit (OC) to terminals M1, M2
and terminal S on the transmission cable terminal block of the indoor unit (M-IC).
c. Connect terminals 1 (M1) and 2 (M2) on the transmission cable terminal block of the indoor unit (M-IC) that has the most recent address within the same group to the
terminal block on the remote controller (M-NET RC).
d. Connect together terminals M1, M2 and terminal S on the terminal block for centralized control (TB7) for the outdoor unit (OC).
e. The jumper connector CN41 on the control panel does not change.
f. Connect shield ground of the indoor units transmission line to the shield (S) terminal of (TB3).
Connect shield ground of the line between outdoor units and the centralized control system transmission line to the shield (S) terminal of (TB7).
g. Set the address setting switch as follows.
Unit
M-IC (Main)
M-IC (Sub)
Outdoor unit
M-NET RC (Main) *1
M-NET RC (Sub) *1
MA RC
*1 An M-NET remote controller cannot be connected to a system that contains a branch box.
h. The group setting operations among the multiple indoor units is done by the remote controller (M-NET RC) after the electrical power has been turned on.
<Wiring Method and Address Setting: include Branch box system>
Please refer to the Branch box Installation Manual.
en
15
Shielding wire CVVS, CPEVS or MVVS
More than 1.25 mm
2
Within 200 m
Shielding wire CVVS, CPEVS or MVVS
0.5 to 1.25 mm (0.75 to 1.25 mm
2 2
When 10 m is exceeded, use cable with the same
specifications as transmission line wiring cables.
Sheathed 2-core cable (unshielded) CVV
0.3 to 1.25 mm (0.75 to 1.25 mm
2
Within 200 m
Range
01 to 50 Use the most recent address within the same group of indoor units
Use an address, other than that of the M-IC (Main) from among the units within the same group of indoor units. This must
01 to 50
be in sequence with the M-IC (Main)
Use the most recent address of all the indoor units plus 50
51 to 100
* The address automatically becomes "100" if it is set as "01 - 50".
101 to 150 Set at an M-IC (Main) address within the same group plus 100
151 to 200 Set at an M-IC (Main) address within the same group plus 150
— Unnecessary address setting (Necessary main/sub setting)
2 Wiring examples
• Controller name, symbol and allowable number of controllers.
Name
Outdoor unit controller
CITY
MULTI
series
Indoor unit
)*
controller
M, S, P
series
Branch box
M-NET
Remote
controller MA
)*
2
Wireless
Note:
*1. The number of connectable units may be limited by some conditions such
as an indoor unit's capacity or each unit's equivalent power consumption.
*2. Don't use the Lossnay controller (PZ-61DR-E, PZ-43SMF-E, PZ-52SF-E,
PZ-60DR-E).
Setting Method
Symbol Allowable number of controllers
OC –
PUMY-SP80 1 to 9 units per 1 OC *1
PUMY-SP112
M-IC
PUMY-SP125 1 to 12 units per 1 OC *1
PUMY-SP140
PUMY-SP80 2 to 5 units per 1 OC *1
PUMY-SP112 2 to 7 units per 1 OC *1
A-IC
PUMY-SP125
2 to 8 units per 1 OC *1
PUMY-SP140
BC 0 to 2 units per 1 OC *1
Maximum of 12 controllers for 1 OC (Can
M-NET RC *2
not be connected if Branch box is used.) *1
MA-RC Maximum of 2 per group
WL-RC –